| https://marketplace.vts.com/listing/one-market-plaza-san-fra... Floor plan for the 23rd floor. https://codelibrary.amlegal.com/codes/san_francisco/latest/s... Superficial Floor Area. Every dwelling unit and congregate residence shall have at least one room which shall have not less than 120 square feet of superficial floor area. Every room which is used for both cooking and living or both living and sleeping purposes shall have not less than 144 square feet of superficial floor area. Every room used for sleeping purposes shall have not less than 70 square feet of superficial floor area. When more than two persons occupy a room used for sleeping purposes the required superficial floor area shall be increased at the rate of 50 square feet for each occupant in excess of two. Guest rooms with cooking shall contain the combined required superficial areas of a sleeping and a kitchen, but not less than 144 square feet. Other habitable rooms shall be not less than 70 square feet.
and Openable Window Area. In guest rooms and habitable rooms within a dwelling unit or congregate residence one-half of the required window area in all rooms and hallways shall be openable.
and (d) Exit Corridors. Every exit corridor in all apartment houses or hotels shall be ventilated as follows:
(1) Windows Required. In an apartment house or hotel, every exit corridor shall have at least one window unless it is lighted and ventilated by a skylight, a ventilated connecting hallway, or a mechanical ventilation system pursuant to the provisions of this Section.
and (g) Artificial Light. In every apartment house and in every hotel there shall be installed artificial light sufficient in volume to illuminate properly every exit corridor, passageway, public stairway, fire escape egress, elevator, public water closet compartment, or toilet room to prevent safety hazard.
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